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mm: Extend gfp masking to the page allocator

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The page allocator also needs the masking of gfp flags during boot,
so this moves it out of slab/slub and uses it with the page allocator
as well.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Benjamin Herrenschmidt
2009-06-18 13:24:12 +10:00
committed by Linus Torvalds
parent 9729a6eb58
commit dcce284a25
5 changed files with 18 additions and 25 deletions
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12
mm/slub.c
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@@ -179,12 +179,6 @@ static enum {
SYSFS /* Sysfs up */
} slab_state = DOWN;
/*
* The slab allocator is initialized with interrupts disabled. Therefore, make
* sure early boot allocations don't accidentally enable interrupts.
*/
static gfp_t slab_gfp_mask __read_mostly = SLAB_GFP_BOOT_MASK;
/* A list of all slab caches on the system */
static DECLARE_RWSEM(slub_lock);
static LIST_HEAD(slab_caches);
@@ -1692,7 +1686,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
unsigned long flags;
unsigned int objsize;
gfpflags &= slab_gfp_mask;
gfpflags &= gfp_allowed_mask;
lockdep_trace_alloc(gfpflags);
might_sleep_if(gfpflags & __GFP_WAIT);
@@ -3220,10 +3214,6 @@ void __init kmem_cache_init(void)
void __init kmem_cache_init_late(void)
{
/*
* Interrupts are enabled now so all GFP allocations are safe.
*/
slab_gfp_mask = __GFP_BITS_MASK;
}
/*